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    "# 提高搜索能力\n",
    "\n",
    "| 类型 | 符号 | 作用 | 案例 |\n",
    "|-------|-------|-------|-------|\n",
    "| `tabs` | ` ` | `关键词` | `News Image` |\n",
    "| `quotes` | `\"\"` | `保留特定语法顺序` | `\"Puppy Dog Sweaters\"` |\n",
    "| `hyphen` | `-` | `排除关键词` | `Mustang -vars` |\n",
    "| `colon` | `site:` | `特定网址搜索` | `Sidney Crosby site:nhl.com` |\n",
    "| `links` | `link:` | `包含特定连接的页面` | `link:nytimes.com` |\n",
    "| `asterisk` | `*` | `通配符, 替换字符` | `“Come * right now * me”` |\n",
    "\n",
    "\n"
   ]
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